Ultra-precision optical surface fabricated by hydrodynamic effect polishing combined with magnetorheological finishing
Sign Up to like & getrecommendations! Published in 2018 at "Optik"
DOI: 10.1016/j.ijleo.2017.11.055
Abstract: Abstract In the traditional machining method, the surface quality will get worse during the surface figuring process while the surface figure will be destroyed after ultra-smooth polishing process. To obtain an ultra-precision optical surface, these… read more here.
Keywords: ultra precision; figure; surface; spatial frequency ... See more keywords
Surface figure measurement tool based on a radial shearing interferometer using a geometric phase lens with various spherical wavefronts.
Sign Up to like & getrecommendations! Published in 2023 at "Applied optics"
DOI: 10.1364/ao.477105
Abstract: We describe a compact radial shearing interferometer based on a geometric phase lens as a surface figure measurement tool. Based on the polarization and diffraction characteristics of a geometric phase lens, two radially sheared wavefronts… read more here.
Keywords: geometric phase; radial shearing; phase lens; surface figure ... See more keywords
Surface figure compensation of the primary mirror in a Ritchey-Chrétien space telescope by spring preloads.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.477606
Abstract: To reduce the surface figure error induced by mechanical strains during the integration process of a high-precision mirror, a cost-efficient compensation method by spring preloads is proposed. The study is based on the primary mirror… read more here.
Keywords: mirror; primary mirror; compensation; surface figure ... See more keywords